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I have a movie clip in my scene as images on planes. My video is at 60 fps. As this will render twice as many frames, I would like to decrease the frame rate to 30. I have managed to do this in the viewport by changing the frame rate to 30 and time stretching the clip to be twice as fast, thus canceling out the slow down in the change of frame rate. this works exactly how I wanted in the viewport. With the video using half as many frames.

The problem is that it doesn't work in the render. The render keeps time stretching on elements that actually move in the scene but doesn't apply to the movie clip like it does in the viewport.

Is this a glitch in rendering or am I doing something wrong?

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  • $\begingroup$ I solved my problem by importing the video with a different frame rate but I'm going to keep this up because the problem in blender isn't solved $\endgroup$
    – Meh Meh
    Commented Jul 3, 2022 at 11:35

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Usualy you just need to change the end keyframe number as well.

Say, in your case the animation is 60 FPS and 1 sec long. If you want it to still be 1 sec long, but in 30 FPS, you should use these numbers in the "time stretching" section:

Old - 100 (or 60) New - 50 (or 30)

Also you have to change the end frame value from 60 to 30. Otherwise your 30 FPS animation will last 2 seconds instead of 1.

The problem is, I'm not sure if it applies to the video, imported inside of Blender.

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